ecocodes
Volume E · Indian defenses‹ E15E17 ›
a1b2c3d4e5f6g7h8
Reference position · White to move

E16 Queen’s Indian Defense: Capablanca Variation

E16 holds eight named lines, all under the name Queen’s Indian Defense. It leaves E15 (Queen’s Indian Defense: Fianchetto Variation, Traditional Line) with 5.Bg2 Bb4+. Black’s pieces and pawns attack seven squares in White’s half, the most of the 8 Queen’s Indian Defense codes. The reference line ends with a check, 5...Bb4+. No other Queen’s Indian Defense code shares this. White, to move in that position, has six legal moves, the third-lowest count of all 500 codes.

Score sheet
#WhiteBlack
1d4Nf6
2c4e6
3Nf3b6
4g3Bb7
5Bg2Bb4+

Moves only E16 plays

Same as E17 up to 5.Bg2, then:

  1. 5...Bb4+ The bishop leaves f8 for b4, opening a line for the rook on h8, giving check.

Lines filed under E16

All eight share the start 1.d4 Nf6 2.c4 e6 3.Nf3 and then split two ways at Black’s move 3.

NameAfter the shared startPliesAt the end
Queen’s Indian Defense: Capablanca Variation3...b6 4.g3 Bb7 5.Bg2 Bb4+10check
Queen’s Indian Defense: Riumin Variation3...b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Bd2 Be712
Queen’s Indian Defense: Yates Variation3...Bb4+ 4.Bd2 a5 5.g3 b6 6.Bg2 Bb712
Queen’s Indian Defense: Capablanca Variation3...b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Nbd2 O-O 7.O-O13both castled
Queen’s Indian Defense: Capablanca Variation3...b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Nbd2 O-O 7.O-O d514both castled
Queen’s Indian Defense: Capablanca Variation3...b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Nbd2 O-O 7.O-O a514both castled
Queen’s Indian Defense: Riumin Variation3...b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Bd2 Be7 7.O-O O-O 8.Nc315both castled
Queen’s Indian Defense: Riumin Variation3...b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Bd2 Be7 7.O-O O-O 8.Nc3 d516both castled

The road to E16

  1. 1.d4 … 3...b6five earlier stops: A40, A45, A50, E10, E12
  2. 4.g3E15 Fianchetto Variation
  3. 4...Bb7E15 Traditional Line
  4. 5...Bb4+E16

The position after 5...Bb4+

White has brought out the knight on f3 and bishop on g2; Black the knight on f6, bishop on b4 and bishop on b7.

WhiteBlackMaterial (pawn units)3939Minor pieces developed23Moves spent on pawns32Pawns on d4, e4, d5, e510Squares attacked in the other half67not castlednot castled

Closest boards in other codes

CodeLineDiffers on
E11Bogo-Indian Defensesix squares: f1, g2, g3, b6, b7, c8
E04Catalan Opening: Open Defenseseven squares: b4, c4, b6, b7, d7, c8, f8
E05Catalan Opening: Open Defense, Classical Lineseven squares: b4, c4, b6, b7, d7, e7, c8
E06Catalan Opening: Closedseven squares: b4, d5, b6, b7, d7, e7, c8
E12Queen’s Indian Defenseseven squares: f1, g2, g3, b4, b7, c8, f8
E10Indian Defense: Anti-Nimzo-Indianeight squares: f1, g2, g3, b4, b6, b7, c8, f8
E21Nimzo-Indian Defense: Three Knights Variationeight squares: b1, f1, g2, c3, g3, b6, b7, c8

Where lines continue from here

One named line filed under other codes passes through the position after 5...Bb4+. It belongs to E11.

Volume E

  1. 00
  2. 01
  3. 02
  4. 03
  5. 04
  6. 05
  7. 06
  8. 07
  9. 08
  10. 09
  11. 10
  12. 11
  13. 12
  14. 13
  15. 14
  16. 15
  17. 16
  18. 17
  19. 18
  20. 19
  21. 20
  22. 21
  23. 22
  24. 23
  25. 24
  26. 25
  27. 26
  28. 27
  29. 28
  30. 29
  31. 30
  32. 31
  33. 32
  34. 33
  35. 34
  36. 35
  37. 36
  38. 37
  39. 38
  40. 39
  41. 40
  42. 41
  43. 42
  44. 43
  45. 44
  46. 45
  47. 46
  48. 47
  49. 48
  50. 49
  51. 50
  52. 51
  53. 52
  54. 53
  55. 54
  56. 55
  57. 56
  58. 57
  59. 58
  60. 59
  61. 60
  62. 61
  63. 62
  64. 63
  65. 64
  66. 65
  67. 66
  68. 67
  69. 68
  70. 69
  71. 70
  72. 71
  73. 72
  74. 73
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  78. 77
  79. 78
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  81. 80
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  90. 89
  91. 90
  92. 91
  93. 92
  94. 93
  95. 94
  96. 95
  97. 96
  98. 97
  99. 98
  100. 99

Open this line in the finderAll Queen’s Indian Defense codes